<!DOCTYPE html>
<html lang='en'>
<head>
    <meta charset='UTF-8'>
    <meta http-equiv='X-UA-Compatible' content='IE=edge'>
    <meta name='viewport' content='width=device-width, initial-scale=1.0'>
    <title>Document</title>
    <script src='../vue.js'></script>
</head>
<body>
    <div id='app'>
        <input type="checkbox" v-model ="flag">我同意
        <br>
        <input type="text" v-model="count">
        <h1>我的值是{{count}}</h1>
    </div>

    <script>
        Vue.config.productionTip = false;

        const vm = new Vue({
            el : '#app',
            data(){
                return {    
                    flag : true,
                    count:''
                }
            }
        })
    </script>
</body>
</html>